NV center in diamond is most studied and promising color center in diamond. It is of interest for various quantum applications ranging from single color center as a nanolocalized sensor of various fields or quantum computing and communication platform to micron size medium and large bulk ensembles of NV centers for ultraprecise sensors. In this talk results on broadband enhancement of single photon emission from NV center in diamond placed in the vicinity of hyperbolic dispersion will be highlighted, followed by results on coupling single NV center to tapered optical fiber and measuring its fluorescence quantum properties with superconducting single photon detector. To address challenge of ultraprecise sensors based on dense NV ensembles several attempts were made. Among them creation of efficient high- volume uniform ceramic MW antenna, creation of high quality diamond plates with good spin properties and high content of color centers, coherent control of N14 nuclear spin ensembles. Together these efforts pave the way towards creation of nuclear enhanced bulk sensors.

424 room​​ (Birzhevaya line, 14​)